8444222611640 has 32 divisors (see below), whose sum is σ = 19267099486560. Its totient is φ = 3330115958400.

The previous prime is 8444222611637. The next prime is 8444222611651. The reversal of 8444222611640 is 461162224448.

It is a junction number, because it is equal to n+sod(n) for n = 8444222611591 and 8444222611600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1486656071 + ... + 1486661750.

It is an arithmetic number, because the mean of its divisors is an integer number (602096858955).

Almost surely, 2^{8444222611640} is an apocalyptic number.

It is an amenable number.

8444222611640 is an abundant number, since it is smaller than the sum of its proper divisors (10822876874920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8444222611640 is a wasteful number, since it uses less digits than its factorization.

8444222611640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2973317903 (or 2973317899 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 44.

The spelling of 8444222611640 in words is "eight trillion, four hundred forty-four billion, two hundred twenty-two million, six hundred eleven thousand, six hundred forty".